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marcodkts/README.md

Marco Aurélio Lima Junior

Software Engineer · Backend & Data Systems · Applied AI

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About me

I build production systems from scratch and evolve them into scalable platforms.

My work is focused on backend engineering, data pipelines, event-driven systems, automation and SaaS architecture. I have experience working in high-ambiguity environments, often close to founders, CTOs and business leadership, turning early product ideas into real systems.

I have worked across IoT platforms, fintech automation, music analytics, media platforms and independent SaaS products, with a strong focus on pragmatic architecture, performance, reliability and business impact.

Tech toolbox

Backend & APIs

Python Django DRF FastAPI Node.js Celery

Data, Messaging & Search

PostgreSQL Redis Kafka RabbitMQ OpenSearch Airflow

Infrastructure & Cloud

Docker Kubernetes AWS Azure Cloudflare Terraform Traefik NGINX

Frontend & Mobile

React TypeScript Vue React Native Expo Astro

Core focus

Backend platforms        Python · Django · DRF · Celery · Redis
Data pipelines           RabbitMQ · Kafka · OpenSearch · Pandas · Airflow
SaaS architecture        Multi-tenancy · Permissions · Billing · Add-ons
Applied AI               OCR · AWS Textract · LlamaIndex · Document understanding
Infrastructure           Docker · Kubernetes · Traefik · Cloudflare · CI/CD

Current product work

Hospitality PMS / SaaS

Building a Property Management System from scratch, owning product, architecture and backend design.

  • Multi-tenant architecture
  • Roles and property-level access
  • Reservation lifecycle
  • Calendar availability
  • Event-driven workflows
  • Subscription and billing boundaries

Dynamic pricing engine

Designing a pricing engine for hospitality operations using rule-based calculations and external context.

  • Daily pricing rules
  • Occupancy and seasonality
  • Holidays and special periods
  • Lead-time adjustments
  • Room/property configuration
  • Explainable pricing breakdowns

Previous work

Trinovati Tecnologia
IoT data platform · real-time ingestion · RabbitMQ · Redis · OpenSearch

BT Créditos
Fintech automation · Django MVP · OCR · Textract · Celery · Airflow

Edesoft Consulting
AWS Lambda · DynamoDB · OCR · React · Node.js · React Native

Atabaque Analytics
Django backend · scraping pipelines · Celery · Redis · Docker

KondZilla
Music data platform 0→1 · YouTube/Spotify/Deezer ingestion · dashboards

A55
Financial APIs · Django · AWS ECS · Docker · Secrets Manager

Engineering interests

0 to 1 Product Engineering Event Driven Architecture Distributed Systems Real Time Processing SaaS Monetization Applied AI

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